98 CERTHIIDif:. 
110. Regulus cristatus, Koch. The Gold- crested Wren. 
I have never met with this species in Andalucia^ where it 
has been recorded as common ; and perhaps the young of the 
next species may have been mista.ken for it. Possibly it may 
occur irregularly, like the Siskin — that is to say, not in all 
winters consecutively. 
The length is about 3| inches; wing, carpus to tip, 2. 
111. Regulus iGNicAPiLLUs (L.). The Fire-crested Wren. 
This species is resident and common in the Cork-wood and 
in the wooded valleys at the back of Algeciraz, coming as 
near to Gibraltar as the Malaga Gardens, close to San Roque. 
They nest rather early, the young being able to fly on the 
15th of May. 
The distinguishing mark of the adults is the greyish- white 
eyebrow, which lies between two black lines, one of which is 
at the base of the crest, the other running from the beak 
through the eye ; below this line is another whitish mark, 
with a third and more faintly marked dark line, — making 
three dark lines and two light-coloured streaks, or, as the 
French have it, triple bandeau. The crest of the male is of a 
fine flame-coloured yellow ; that of the female, lemon-yellow. 
The size of the two species is about equal. 
Family Certhiid.e. 
112. TicHODROMA MURARiA, Liuu. The Wall-Creeper. 
I have never met with this bird ; it is recorded from the 
Sierra Nevada and the north of Spain, and has been stated 
to have been seen at Gibraltar. 
It is a grey bird, and the only species known of its genus; 
it has the wing-coverts and the basal half of the outer webs 
of the quill-feathers crimson, the average length being about 
6 inches. 
113. Certhia familiaris, Linn. The Tree-Creeper. 
Spanish. Barba-jelena, Trepa-troncas. 
The Tree-Creeper is resident and common in the Cork- 
wood and in the valleys near Algeciraz, nesting in April. I 
